lepu-test-platform-web/node_modules/events/tests/special-event-names.js

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'use strict';
var common = require('./common');
var EventEmitter = require('../');
var assert = require('assert');
var ee = new EventEmitter();
var handler = function() {};
assert.strictEqual(ee.eventNames().length, 0);
assert.strictEqual(ee._events.hasOwnProperty, undefined);
assert.strictEqual(ee._events.toString, undefined);
ee.on('__defineGetter__', handler);
ee.on('toString', handler);
ee.on('__proto__', handler);
assert.strictEqual(ee.eventNames()[0], '__defineGetter__');
assert.strictEqual(ee.eventNames()[1], 'toString');
assert.strictEqual(ee.listeners('__defineGetter__').length, 1);
assert.strictEqual(ee.listeners('__defineGetter__')[0], handler);
assert.strictEqual(ee.listeners('toString').length, 1);
assert.strictEqual(ee.listeners('toString')[0], handler);
// Only run __proto__ tests if that property can actually be set
if ({ __proto__: 'ok' }.__proto__ === 'ok') {
assert.strictEqual(ee.eventNames().length, 3);
assert.strictEqual(ee.eventNames()[2], '__proto__');
assert.strictEqual(ee.listeners('__proto__').length, 1);
assert.strictEqual(ee.listeners('__proto__')[0], handler);
ee.on('__proto__', common.mustCall(function(val) {
assert.strictEqual(val, 1);
}));
ee.emit('__proto__', 1);
process.on('__proto__', common.mustCall(function(val) {
assert.strictEqual(val, 1);
}));
process.emit('__proto__', 1);
} else {
console.log('# skipped __proto__')
}